World: r3wp
[!RebDB] REBOL Pseudo-Relational Database
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onetom 16-Apr-2011 [257x12] | if exists? login: join system/script/parent/path %login.sql [ client/run login ] this would make more sense to me in SQL.r, so any directory with a login.sql could be either a server or client directory |
it would also make more sense to call it init.sql and provide a client.sql and a server.sql as examples in the distribution | |
if im enabling the spool feature, i just get this error: | |
onetom ~/rebol/db $ rebdb Replaying 9 change(s). ** Script Error: Out of range or past end ** Where: func [/local log][ ... | |
the only way to restart the server is to | |
onetom ~/rebol/db $ rm ../rebdb/replay.bak ../rebdb/session.log | |
if i do a commit *, then the replay.bak won't exist, but the server will still try to execute the session.log, which results in fractional changes: | |
onetom ~/rebol/db $ rebdb Replaying 4.5 change(s). ** Script Error: Out of range or past end | |
if i say set spool session.txt, then it works.. pretty confusing default. and i would expect the file created in the current directory, not where the db.r file is stored | |
and now i get | |
SQL> select * asd asd has an open log file | |
commit asd doesn't help | |
nve 7-Jun-2011 [269] | Is there a protocol version of RedDB ? In order to use it under Cheyenne with database enhancement. |
Ashley 8-Jun-2011 [270] | No, but it wouldn't be that hard to write a protocol wrapper replacement for the SQL function. |
Dockimbel 8-Jun-2011 [271] | Cheyenne is able to run RSP and CGI scripts concurrently on several processes at the same time. AFAIK, RebDB does not do any locking on write access, it would be unsafe to use in the general case with Cheyenne. SQLite would be more resilient, but keep in mind that as it is locking the whole DB on each write access, it is not scalable. |
ddharing 8-Jun-2011 [272] | The new(er) WAL (Write Ahead Logging) transaction mode reduces locking and increases concurrency -- http://sqlite.org/wal.html. |
nve 11-Jun-2011 [273x2] | Seems that the SQL interpreter (SQL.r) do not support multi lines : |
SQL> create table c2 [ ** Syntax Error: Missing ] at end-of-script ** Near: (line 1) create table c2 [ | |
Ashley 15-Jun-2011 [275:last] | Correct, it's just an 'ask loop (hence no semi-colon for command termination). |
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